keotey



F. E. KENNEY, PORTABLE RECIPROCABLE HYDRAULIC POWER DEVICE.

APPLICATION FILED FEB-23.1915.

l 1 95,1 4 1 Patented Aug. 15, 1916.

9 Z Z4 27 f L Q i 8 10 V 7 WITNESSES."

Ah. pflm- 7. MAM f- Em NK E KENNY A TTOR/VEV I pnrrn snare ATNT @FFJICF.

' FRANK E. KENNEY, on PORTLAND, OREGON, ASSIGNOR OF rrvn-nrenrns 'roDANIEL w. HOELBING, or ronT AND, OREGON.

. Pennants BECIIE'BOCABLE HYDRAULIC rowan nnvrcza.

Specification of Letters Patent.

Application filed February 23, 1915. Serial No. 10,162.

To all whom it may concern:

Be it known that I, FRANK E. KENNEY, a citizen of the United States, anda resident of. Portland, county of Multnomah, and State of Oregon, haveinvented new and useful Improvement in Portable Reciprocable HydraulicPower'Devices, of-which the following is a Specification.

The object ofxiny invention is to a hand-operated portable hydraulicpower device adapted for applying a pushing or a pulling force to anyobject.

My nvention was especially designed for thesplittin'g of logs andstumps; but it may be effectively used for many other purposes besides.

The wordhydraulic is to be understood as designating any suitable fluid.In most instances I prefer to use oil.

The details of construction of my hydraulic power device and its mode ofoperation will be more readily understood by having reference to theaccompanying drawings as a part of this specification.

In such drawings, Figure I shows a side elevation of my hydraulic powerdevice, the engine cylinder .and the compensating cylinder being shownin longitudinal, vertical section. Fig. II is atop or plan view of mydevice. Fig. II is a detail of construction showing the rear end of theengine cylinder;

Fig. III is'a left-end view of my device.

Fig. IV is a vertical section taken on the broken line IV of Fig. IV

section taken on the broken line IV of Fig. IV. Fig. IV is a sectionalview similar to Fig. IV, but taken through the branch pipe 15 andshowing the valve 30 in reverse position relative to the position of thevalve 30 in Fig. IV.

The construction and operation, of my! hydraulic power device is asfollows: It is meets the outer ends of the engine cylinder .and thecompensating chamber. At the inner end of the compensating chamber 1 isprovided a duct or port 9, which connects with a transverse pipe 10, onone end of .pipe 10, but prevents the provide a. downwardly extendingillustrated in Figs. IV and IV.

Fig. IV is a i which .is mounted a funnel-shape tube 11, openlng to theair for receiving the operating fluid, for which I preferably use oil,and also permitting they air to enter. A check-valve is to be understoodas located at 12, which is adapted to admit fluid into the emission offluid from said pipe. The latter connects with a pipe 13,. which hasbranches 14 and 15 connecting with the four way valve 16, operated byits handle 17. The construction of the valve 16, is'shown in Fig. IV andis of the spigot type, its spigot 18 being provided with radial alinedports 19 connecting with port 20, leading to the bottom of the valvechamberv 21. The bottom of the valve-chamber is connected by a duct 22with the force-pump 23, operable by its handle 24. The valve 16 isfurther connected by pipes 25 and 26, with a pipe 27', which isconnected by .a branch 28 to the port 29, at the inner end of the enginecylinder is. When the spigot 18 is in one position, as shown in Fig. IV,the alined ports 19 connect the pipes 15 and 25, and when said spigot isturned through an angle of 90 degrees, the ports 19 will connect thepipes 14: and 26. The How of the operating fluid through each of thepipes 14. 15, 25 and 26 is controlled by a check-valve 30, as The valves30 in pipes 14 and 25 opentoward the valve 16, as shown in Fig. IV, andthe valves 30 in pipes 15 and 26 open away from the valve 16, as shownin Fig. IV". The check valves are so arranged that by the proper adjustment of the valve 16, the fluid may be pumped from the outer end of theengine cylinder, through the her 1, into ,the inner der, thus forcingthe ward, or vice-versa, as required. The purpose of the compensatingchamber is apparent from an inspection of Fig. I. Since the piston rod utakes up a portion of the space of the engine cylinder on the outer orforward side of the piston u, when the piston is moved inward thesurplus operating fluid so displaced must be taken care of, andtherefore is held in storage, as it were, in the compensating chamber 1.The piston u is retracted by pumping the 'fluid into the forward end ofthe cylinder 76. When the piston. 10 has been projected forward thecompensating chamber 1 will be only compensating chamend of theengine-cylin- Patented Au 15, rare.

piston in the latter fori partially full, owing to the fact that morefluid is pumped out of it into the rear end of the cylinder, is, than iscarried into said chamber. Conversely, when the piston is retracted, thecompensating tank will fill owing to the fact that more fluid is pumpedinto it than it discharges. The pump and valve elements of my engine aresupported on a bracket 31, cast on the rear end of the inner head of theengine cylinder 70, as shown in Figs. I and III.

I claim:

1. In a device of the character described, the combination of a cylinderand piston therein and a piston rod projecting through one end of thecylinder, a compensating chamber, a duct connecting that end of thecylinder through which the piston rod eX- tends with said compensatingchamber; a fluid inlet for the compensating chamber, a valve in suchinlet preventing the outflow of fluid; a force-pump, ducts connectingthev latter with the compensating chamber and one end .01 the cylinder,a compensating chamber, a duct connecting that end of the cylinderthrough which the piston rod extends with said compensating chamber; afluid inlet for the compensating chamber, a valve in such inletpreventing the outflow of fluid; .a force-pump, ducts connecting thelatter with the compensating chamber and the other end of the cylinder,a four-way adjustable valve controlling the admission of fluid throughsaid ducts, and check valves in the latter. v

v FRANK E. KENNEY. Witnesses:

WM. C. SGHMITT, D. E. CRABB.

